WSU Extension > Walla Walla County > Loading view. There were no results found. There were no results found. Events Walla Walla Extension Office Walla Walla Extension Office 328 West Poplar Walla Walla, WA 99362 United States Get Directions 509-524-2685 Today Upcoming Upcoming Select date. Previous Events Today Next Events Subscribe to calendar Google Calendar iCalendar Outlook 365 Outlook Live Export .ics file Export Outlook .ics file